

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 0 | 7 | 0 | 0 | 7 |
| 1970 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1971 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1972 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1973 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1974 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1975 | 0 | 2 | 1 | 0 | 0 | 3 |
| 1976 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1977 | 0 | 1 | 6 | 0 | 0 | 7 |
| 1978 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1979 | 0 | 4 | 5 | 0 | 0 | 9 |
| 1980 | 0 | 1 | 5 | 0 | 0 | 6 |
| 1981 | 0 | 1 | 3 | 0 | 0 | 4 |
| 1982 | 0 | 0 | 5 | 0 | 0 | 5 |
| 1983 | 0 | 0 | 3 | 0 | 0 | 3 |
| 1984 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1985 | 0 | 1 | 2 | 0 | 0 | 3 |
| 1986 | 1 | 0 | 1 | 0 | 0 | 2 |
| 1987 | 1 | 2 | 6 | 0 | 0 | 9 |
| 1988 | 0 | 4 | 2 | 0 | 0 | 6 |
| 1989 | 1 | 10 | 8 | 0 | 0 | 19 |
| 1990 | 3 | 13 | 8 | 0 | 0 | 24 |
| 1991 | 0 | 8 | 9 | 0 | 0 | 17 |
| 1992 | 4 | 7 | 6 | 0 | 0 | 17 |
| 1993 | 1 | 10 | 12 | 0 | 0 | 23 |
| 1994 | 2 | 32 | 11 | 0 | 0 | 45 |
| 1995 | 2 | 10 | 15 | 0 | 0 | 27 |
| 1996 | 2 | 24 | 9 | 0 | 0 | 35 |
| 1997 | 0 | 52 | 21 | 0 | 0 | 73 |
| 1998 | 1 | 44 | 17 | 0 | 1 | 63 |
| 1999 | 0 | 43 | 13 | 0 | 0 | 56 |
| 2000 | 2 | 42 | 16 | 0 | 0 | 60 |
| 2001 | 3 | 46 | 12 | 0 | 0 | 61 |
| 2002 | 0 | 76 | 21 | 0 | 0 | 97 |
| 2003 | 1 | 39 | 19 | 0 | 0 | 59 |
| 2004 | 0 | 56 | 15 | 0 | 0 | 71 |
| 2005 | 2 | 25 | 14 | 0 | 0 | 41 |
| 2006 | 2 | 78 | 40 | 0 | 0 | 120 |
| 2007 | 1 | 53 | 33 | 0 | 0 | 87 |
| 2008 | 1 | 32 | 31 | 0 | 0 | 64 |
| 2009 | 5 | 42 | 53 | 0 | 0 | 100 |
| 2010 | 1 | 41 | 55 | 0 | 0 | 97 |
| 2011 | 2 | 39 | 46 | 0 | 0 | 87 |
| 2012 | 2 | 57 | 48 | 0 | 0 | 107 |
| 2013 | 1 | 152 | 74 | 0 | 0 | 227 |
| 2014 | 5 | 154 | 74 | 0 | 0 | 233 |
| 2015 | 8 | 190 | 106 | 0 | 0 | 304 |
| 2016 | 5 | 148 | 150 | 0 | 1 | 304 |
| 2017 | 8 | 201 | 154 | 0 | 0 | 363 |
| 2018 | 8 | 223 | 154 | 0 | 0 | 385 |
| 2019 | 10 | 237 | 142 | 0 | 0 | 389 |
| 2020 | 6 | 261 | 221 | 0 | 0 | 488 |
| 2021 | 13 | 288 | 176 | 0 | 1 | 478 |
| 2022 | 3 | 268 | 210 | 0 | 1 | 482 |
| 2023 | 10 | 345 | 177 | 0 | 2 | 534 |
| 2024 | 10 | 340 | 228 | 0 | 1 | 579 |
| 2025 | 0 | 0 | 5 | 0 | 0 | 5 |
| Total | 127 | 3702 | 2455 | 0 | 7 | 6291 |